Movement in peristome teeth of moss is

Hydrochasy

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Xerochasy

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Chemotactic

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Chemotropism

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Solution

The correct option is B Xerochasy
Peristome teeth is a valve that allows the spores to spill out the capsule at low humidity and allow the spores to float away and disperse. Xerochasy is the release of seeds or spores when the pod or capsule get dry. Mosses have slits between the peristome which expand when getting dry and releases spores. Thus, the correct answer is option B.

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